Because few specific signs and symptoms of Candida are usually present, healthcare providers cannot diagnose a yeast infection by a person's medical history and physical examination alone. They usually diagnose a yeast infection by testing for Candida. A Candida test involves using a swab to take a sample from the affected area. A lab test of the sample will show if yeast is the cause of your symptoms.
(Click Candida Albicans for more information about Candida.)